| Iowa City to Oschatz | 4,586.41 mi (7,381.11 km) |
| Iowa City to Oschersleben | 4,493.08 mi (7,230.91 km) |
| Iowa City to Osnabruck | 4,371.91 mi (7,035.91 km) |
| Iowa City to Ostbevern | 4,374.31 mi (7,039.78 km) |
| Iowa City to Osterburg | 4,479.06 mi (7,208.35 km) |
| Iowa City to Ostercappeln | 4,375.68 mi (7,041.98 km) |
| Iowa City to Osterhofen | 4,694.68 mi (7,555.36 km) |
| Iowa City to Osterholz-Scharmbeck | 4,361.27 mi (7,018.79 km) |
| Iowa City to Osternienburg | 4,528.22 mi (7,287.47 km) |
| Iowa City to Osterode | 4,470.53 mi (7,194.62 km) |
| Iowa City to Osterwieck | 4,476.85 mi (7,204.80 km) |
| Iowa City to Ostfildern | 4,557.23 mi (7,334.15 km) |
| Iowa City to Osthofen | 4,483.99 mi (7,216.28 km) |
| Iowa City to Ostrhauderfehn | 4,324.59 mi (6,959.76 km) |
| Iowa City to Ostringen | 4,517.64 mi (7,270.44 km) |
